[lopis]

While you are correct, the differences between different people's DNA is tiny, less 1% at best. So this information is still very valuable. This article is talking about the first time in finishing sequencing one person's Y chromosome's DNA.

[hk__2]

> While you are correct, the differences between different people's DNA is tiny, less 1% at best

How do we know this, if we have only sequenced the chromosome of one individual?

[lopis]

We have sequenced the genome using different sampling and statistical models for a long time.